#include <stdlib.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <iostream>
#include <fstream>
#include <vector>
#include <string>
#include <sstream>
#include <include/rapidjson/document.h>

#include "cs104_slave.h"

#include "hal_thread.h"
#include "hal_time.h"

static bool running = true;

using namespace rapidjson;
using namespace std;

bool isConnected = false;

struct Data {
    int t;
    string type;
    vector<pair<int, double>> values;
};

vector<Data> parseJson(const string& jsonStr) {
   vector<Data> dataList;
    Document doc;
    doc.Parse(jsonStr.c_str());

    if (doc.HasParseError()) {
        cerr << "JSON 解析错误: " << doc.GetParseError() << endl;
        return dataList;
    }

    const Value& root = doc;
    if (!root.IsArray()) {
        //cerr << "JSON 根节点不是数组" << endl;
        return dataList;
    }

    for (SizeType i = 0; i < root.Size(); ++i) {
        const Value& node = root[i];
        if (!node.IsObject()) {
            //cerr << "JSON 数组元素不是对象" << endl;
            continue;
        }

        Data data;
        if (node.HasMember("t") && node["t"].IsInt()) {
            data.t = node["t"].GetInt();
        } else {
            //cerr << "JSON 对象缺少 't' 成员或 't' 成员不是整数" << endl;
            continue;
        }

        if (node.HasMember("type") && node["type"].IsString()) {
            data.type = node["type"].GetString();
        } else {
            //cerr << "JSON 对象缺少 'type' 成员或 'type' 成员不是字符串" << endl;
            continue;
        }

        if (node.HasMember("values") && node["values"].IsObject()) {
            const Value& values = node["values"];
            for (Value::ConstMemberIterator itr = values.MemberBegin(); itr != values.MemberEnd(); ++itr) {

                int pos = atoi(itr->name.GetString());
                int value = itr->value.GetDouble();
                
                data.values.emplace_back(pos, value);
               
            }
        } 
        //else {
        //    cerr << "JSON 对象缺少 'values' 成员或 'values' 成员不是数组" << endl;

        //}

        dataList.push_back(data);
    }
    return dataList;
}

void
sigint_handler(int signalId)
{
    running = false;
}

void
printCP56Time2a(CP56Time2a time)
{
    printf("%02i:%02i:%02i %02i/%02i/%04i", CP56Time2a_getHour(time),
                             CP56Time2a_getMinute(time),
                             CP56Time2a_getSecond(time),
                             CP56Time2a_getDayOfMonth(time),
                             CP56Time2a_getMonth(time),
                             CP56Time2a_getYear(time) + 2000);
}

/* Callback handler to log sent or received messages (optional) */
static void
rawMessageHandler(void* parameter, IMasterConnection conneciton, uint8_t* msg, int msgSize, bool sent)
{
    if (sent)
        printf("SEND: ");
    else
        printf("RCVD: ");

    int i;
    for (i = 0; i < msgSize; i++) {
        printf("%02x ", msg[i]);
    }

    printf("\n");
}

static bool
clockSyncHandler (void* parameter, IMasterConnection connection, CS101_ASDU asdu, CP56Time2a newTime)
{
    printf("Process time sync command with time "); printCP56Time2a(newTime); printf("\n");

    uint64_t newSystemTimeInMs = CP56Time2a_toMsTimestamp(newTime);

    /* Set time for ACT_CON message */
    CP56Time2a_setFromMsTimestamp(newTime, Hal_getTimeInMs());

    /* update system time here */

    return true;
}

static bool
interrogationHandler(void* parameter, IMasterConnection connection, CS101_ASDU asdu, uint8_t qoi)
{
    printf("Received interrogation for group %i\n", qoi);
    isConnected = true;
    return true;

    if (qoi == 20) { /* only handle station interrogation */

        CS101_AppLayerParameters alParams = IMasterConnection_getApplicationLayerParameters(connection);

        IMasterConnection_sendACT_CON(connection, asdu, false);

        /* The CS101 specification only allows information objects without timestamp in GI responses */

        CS101_ASDU newAsdu = CS101_ASDU_create(alParams, false, CS101_COT_INTERROGATED_BY_STATION,
                0, 1, false, false);

        InformationObject io = (InformationObject) MeasuredValueScaled_create(NULL, 100, -1, IEC60870_QUALITY_GOOD);

        CS101_ASDU_addInformationObject(newAsdu, io);

        CS101_ASDU_addInformationObject(newAsdu, (InformationObject)
            MeasuredValueScaled_create((MeasuredValueScaled) io, 101, 23, IEC60870_QUALITY_GOOD));

        CS101_ASDU_addInformationObject(newAsdu, (InformationObject)
            MeasuredValueScaled_create((MeasuredValueScaled) io, 102, 2300, IEC60870_QUALITY_GOOD));

        InformationObject_destroy(io);

        IMasterConnection_sendASDU(connection, newAsdu);

        CS101_ASDU_destroy(newAsdu);

        newAsdu = CS101_ASDU_create(alParams, false, CS101_COT_INTERROGATED_BY_STATION,
                    0, 1, false, false);

        io = (InformationObject) SinglePointInformation_create(NULL, 104, true, IEC60870_QUALITY_GOOD);

        CS101_ASDU_addInformationObject(newAsdu, io);

        CS101_ASDU_addInformationObject(newAsdu, (InformationObject)
            SinglePointInformation_create((SinglePointInformation) io, 105, false, IEC60870_QUALITY_GOOD));

        InformationObject_destroy(io);

        IMasterConnection_sendASDU(connection, newAsdu);

        CS101_ASDU_destroy(newAsdu);

        newAsdu = CS101_ASDU_create(alParams, true, CS101_COT_INTERROGATED_BY_STATION,
                0, 1, false, false);

        CS101_ASDU_addInformationObject(newAsdu, io = (InformationObject) SinglePointInformation_create(NULL, 300, true, IEC60870_QUALITY_GOOD));
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject) SinglePointInformation_create((SinglePointInformation) io, 301, false, IEC60870_QUALITY_GOOD));
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject) SinglePointInformation_create((SinglePointInformation) io, 302, true, IEC60870_QUALITY_GOOD));
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject) SinglePointInformation_create((SinglePointInformation) io, 303, false, IEC60870_QUALITY_GOOD));
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject) SinglePointInformation_create((SinglePointInformation) io, 304, true, IEC60870_QUALITY_GOOD));
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject) SinglePointInformation_create((SinglePointInformation) io, 305, false, IEC60870_QUALITY_GOOD));
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject) SinglePointInformation_create((SinglePointInformation) io, 306, true, IEC60870_QUALITY_GOOD));
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject) SinglePointInformation_create((SinglePointInformation) io, 307, false, IEC60870_QUALITY_GOOD));

        InformationObject_destroy(io);

        IMasterConnection_sendASDU(connection, newAsdu);

        CS101_ASDU_destroy(newAsdu);

        newAsdu = CS101_ASDU_create(alParams, false, CS101_COT_INTERROGATED_BY_STATION,
                        0, 1, false, false);

        io = (InformationObject) BitString32_create(NULL, 500, 0xaaaa);

        CS101_ASDU_addInformationObject(newAsdu, io);

        InformationObject_destroy(io);

        IMasterConnection_sendASDU(connection, newAsdu);

        CS101_ASDU_destroy(newAsdu);

        IMasterConnection_sendACT_TERM(connection, asdu);
    }
    else {
        IMasterConnection_sendACT_CON(connection, asdu, true);
    }

    return true;
}

static bool
asduHandler(void* parameter, IMasterConnection connection, CS101_ASDU asdu)
{
    if (CS101_ASDU_getTypeID(asdu) == C_SC_NA_1) {
        printf("received single command\n");

        if  (CS101_ASDU_getCOT(asdu) == CS101_COT_ACTIVATION) {
            InformationObject io = CS101_ASDU_getElement(asdu, 0);

            if (io) {
                if (InformationObject_getObjectAddress(io) == 5000) {
                    SingleCommand sc = (SingleCommand) io;

                    printf("IOA: %i switch to %i\n", InformationObject_getObjectAddress(io),
                            SingleCommand_getState(sc));

                    CS101_ASDU_setCOT(asdu, CS101_COT_ACTIVATION_CON);
                }
                else
                    CS101_ASDU_setCOT(asdu, CS101_COT_UNKNOWN_IOA);

                InformationObject_destroy(io);
            }
            else {
                printf("ERROR: message has no valid information object\n");
                return true;
            }
        }
        else
            CS101_ASDU_setCOT(asdu, CS101_COT_UNKNOWN_COT);

        IMasterConnection_sendASDU(connection, asdu);

        return true;
    }

    return false;
}

static bool
connectionRequestHandler(void* parameter, const char* ipAddress)
{
    printf("New connection request from %s\n", ipAddress);

#if 0
    if (strcmp(ipAddress, "127.0.0.1") == 0) {
        printf("Accept connection\n");
        return true;
    }
    else {
        printf("Deny connection\n");
        return false;
    }
#else
    return true;
#endif
}

static void
connectionEventHandler(void* parameter, IMasterConnection con, CS104_PeerConnectionEvent event)
{
    if (event == CS104_CON_EVENT_CONNECTION_OPENED) {
        printf("Connection opened (%p)\n", con);
    }
    else if (event == CS104_CON_EVENT_CONNECTION_CLOSED) {
        printf("Connection closed (%p)\n", con);
    }
    else if (event == CS104_CON_EVENT_ACTIVATED) {
        printf("Connection activated (%p)\n", con);
    }
    else if (event == CS104_CON_EVENT_DEACTIVATED) {
        printf("Connection deactivated (%p)\n", con);
    }
}

int
main(int argc, char** argv)
{

    ifstream file("project.json");
    if (!file.is_open()) {
        cerr << "无法打开文件" << endl;
        return 1;
    }

    stringstream buffer;
    buffer << file.rdbuf();
    string jsonStr = buffer.str();
    vector<Data> dataList = parseJson(jsonStr);

    /* Add Ctrl-C handler */
    signal(SIGINT, sigint_handler);

    /* create a new slave/server instance with default connection parameters and
     * default message queue size */
    CS104_Slave slave = CS104_Slave_create(10, 10);

    CS104_Slave_setLocalAddress(slave, "0.0.0.0");

    /* Set mode to a single redundancy group
     * NOTE: library has to be compiled with CONFIG_CS104_SUPPORT_SERVER_MODE_SINGLE_REDUNDANCY_GROUP enabled (=1)
     */
    CS104_Slave_setServerMode(slave, CS104_MODE_SINGLE_REDUNDANCY_GROUP);

    /* get the connection parameters - we need them to create correct ASDUs -
     * you can also modify the parameters here when default parameters are not to be used */
    CS101_AppLayerParameters alParams = CS104_Slave_getAppLayerParameters(slave);

    /* when you have to tweak the APCI parameters (t0-t3, k, w) you can access them here */
    CS104_APCIParameters apciParams = CS104_Slave_getConnectionParameters(slave);

    printf("APCI parameters:\n");
    printf("  t0: %i\n", apciParams->t0);
    printf("  t1: %i\n", apciParams->t1);
    printf("  t2: %i\n", apciParams->t2);
    printf("  t3: %i\n", apciParams->t3);
    printf("  k: %i\n", apciParams->k);
    printf("  w: %i\n", apciParams->w);

    /* set the callback handler for the clock synchronization command */
    CS104_Slave_setClockSyncHandler(slave, clockSyncHandler, NULL);

    /* set the callback handler for the interrogation command */
    CS104_Slave_setInterrogationHandler(slave, interrogationHandler, NULL);

    /* set handler for other message types */
    CS104_Slave_setASDUHandler(slave, asduHandler, NULL);

    /* set handler to handle connection requests (optional) */
    CS104_Slave_setConnectionRequestHandler(slave, connectionRequestHandler, NULL);

    /* set handler to track connection events (optional) */
    CS104_Slave_setConnectionEventHandler(slave, connectionEventHandler, NULL);

    /* uncomment to log messages */
    //CS104_Slave_setRawMessageHandler(slave, rawMessageHandler, NULL);

    CS104_Slave_start(slave);

    if (CS104_Slave_isRunning(slave) == false) {
        printf("Starting server failed!\n");
        goto exit_program;
    }

    int16_t scaledValue = 0;


    for (const auto& data : dataList) {
        cout << "t: " << data.t << ", type: " << data.type << endl;
        for (const auto& value : data.values) {
            cout << "  key: " << value.first << ", value: " << value.second << endl;
        }
    }

    int frameIdx = 0;

    int lasttime = 0;

    while (running) {

        if (!isConnected || frameIdx >= dataList.size())
        {
            Thread_sleep(50);
            continue;
        }

        Data d = dataList[frameIdx];


        Thread_sleep(d.t - lasttime);
        lasttime = d.t;
        CS101_ASDU newAsdu = CS101_ASDU_create(alParams, false, CS101_COT_PERIODIC, 0, 1, false, false);


        if (d.type.compare("yc") == 0)
        {
            
            InformationObject io = (InformationObject)MeasuredValueScaled_create(NULL, d.values[0].first, d.values[0].second, IEC60870_QUALITY_GOOD);
            CS101_ASDU_addInformationObject(newAsdu, io);

            for (int i = 1; i < d.values.size(); i++)
            {
                CS101_ASDU_addInformationObject(newAsdu, (InformationObject)MeasuredValueScaled_create(NULL, d.values[i].first, d.values[i].second, IEC60870_QUALITY_GOOD));
            }

            InformationObject_destroy(io);
        }

        else if (d.type.compare("yx") == 0)
        {

            InformationObject io = (InformationObject)SinglePointInformation_create(NULL, d.values[0].first, int(d.values[0].second), IEC60870_QUALITY_GOOD);
            CS101_ASDU_addInformationObject(newAsdu, io);

            for (int i = 1; i < d.values.size(); i++)
            {
                CS101_ASDU_addInformationObject(newAsdu, (InformationObject)SinglePointInformation_create(NULL, d.values[i].first, int(d.values[i].second), IEC60870_QUALITY_GOOD));
            }

            InformationObject_destroy(io);
        }
        

        /* Add ASDU to slave event queue */
        CS104_Slave_enqueueASDU(slave, newAsdu);

        CS101_ASDU_destroy(newAsdu);

        frameIdx++;
    }

    CS104_Slave_stop(slave);

exit_program:
    CS104_Slave_destroy(slave);

    Thread_sleep(500);
}
